From b1869d2df0c789ecfa551c614a2566cbbc1921e0 Mon Sep 17 00:00:00 2001
From: Matt Graham <graham@github.com>
Date: Tue, 5 Nov 2013 18:25:27 -0500
Subject: [PATCH 1/8] dark chrome tabs

---
 stylesheets/panels.less       |   1 -
 stylesheets/tabs.less         | 156 ++++++++++++++++++++++------------
 stylesheets/ui-variables.less |   2 +-
 3 files changed, 102 insertions(+), 57 deletions(-)

diff --git a/stylesheets/panels.less b/stylesheets/panels.less
index a8ceebf..d5c5743 100644
--- a/stylesheets/panels.less
+++ b/stylesheets/panels.less
@@ -39,7 +39,6 @@
 .is-blurred {
   .tool-panel,
   .inset-panel {
-    opacity: 0.6;
   }
 }
 
diff --git a/stylesheets/tabs.less b/stylesheets/tabs.less
index e2f9e16..7eafeea 100644
--- a/stylesheets/tabs.less
+++ b/stylesheets/tabs.less
@@ -1,65 +1,111 @@
 @import "ui-variables";
-@import "ui-mixins";
+@tab-radius: 3px;
+@modified-icon-width: 8px;
+@tab-skew: 30deg;
+@tab-top-padding: 5px;
+@tab-bottom-border-height: 5px;
+@tab-border: 1px solid @tab-border-color;
 
 .tab-bar {
-  height: @tab-height + 6px;
-  border-bottom: 4px solid @tab-bar-border-color;
-  box-shadow: inset 0 -1px 0 rgba(255, 255, 255, 0.2), 0 1px 0 rgba(0, 0, 0, 0.5);
-  margin-bottom: 1px;
-  background-color: @tab-bar-background-color;
-}
+  height: @tab-height + @tab-top-padding + 5px;
+  background-image: -webkit-linear-gradient(top, @tab-bar-background-color, lighten(@tab-bar-background-color, 9%));
+  box-shadow: inset 0 -8px 8px -4px rgba(0,0,0, .15);
+  padding: 0 10px;
 
-.tab {
-  height: @tab-height;
-  line-height: @tab-height;
-  color: @text-color;
-  margin: 0;
-  background-image: -webkit-linear-gradient(@tab-background-color, darken(@tab-background-color, 10%));
-  box-shadow:
-    inset 0 2px 0 rgba(255, 255, 255, 0.1),
-    inset 0 1px 0 rgba(0, 0, 0, 1),
-    inset 1px 0 0 @background-color-highlight,
-    inset -1px 0 0 @background-color-highlight;
-}
-
-.tab:hover {
-  color: @text-color-highlight;
-}
-
-.tab.active {
-  height: @tab-height + 1px;
-  background-image: -webkit-linear-gradient(@tab-background-color-active, @tab-bar-border-color);
-  color: @text-color-highlight;
-  text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.2);
-  z-index: 2;
-  box-shadow:
-    inset 0 1px 0 rgba(0, 0, 0, 0.5),
-    inset 0 2px 0 rgba(255, 255, 255, 0.1),
-    inset 1px 0 0 rgba(255, 255, 255, 0.1),
-    inset -1px 0 0 rgba(255, 255, 255, 0.1)
-}
-
-.tab.active:hover .close-icon {
-  color: @text-color-highlight;
-}
-
-// Bootstrap nav tabs.
-.nav.nav-tabs {
-  border-bottom-color: @tab-background-color-active;
-
-  > li {
-    margin-bottom: 0;
+  &:after {
+    content: "";
+    position: absolute;
+    bottom: 0;
+    height: @tab-bottom-border-height;
+    left: 0px;
+    width: 100%;
+    background-color: @tab-background-color-active;
+    border-bottom: 1px solid @tab-bar-border-color;
+    border-top: 1px solid @tab-border-color;
   }
 
-  > li > a {
-    border: none;
+  .tab {
+    position: relative;
+    top: @tab-top-padding;
+    height: @tab-height;
+    line-height: @tab-height;
+    color: @text-color;
+    padding-left: 0;
+    margin-left: 15px;
+    border-top-right-radius: @tab-radius;
+    border-right: @tab-border;
+    box-shadow: inset -1px -1px 1px rgba(0,0,0, .05);
+    -webkit-transform: skewX(@tab-skew);
+    transition: color .1s ease-in;
+
+    &, &:before {
+      background-image: -webkit-linear-gradient(top, @tab-background-color, darken(@tab-background-color, 6%));
+      border-top: @tab-border;
+    }
+
+    &:before {
+      content: '';
+      position: absolute;
+      top: -1px;
+      left: -18px;
+      height: @tab-height;
+      width: 34px;
+      border-top-left-radius: @tab-radius;
+      border-left: @tab-border;
+      box-shadow: inset 1px -1px 1px rgba(0,0,0, .05);
+      -webkit-transform: skewX(133deg);
+    }
+
+    .close-icon {
+      z-index: 3;
+      line-height: @tab-height;
+      -webkit-transform: skewX(-@tab-skew);
+    }
+    &.modified:not(:hover) .close-icon {
+      top: @tab-height/2 - @modified-icon-width/2 + 1px;
+      right: 14px;
+      width: @modified-icon-width;
+      height: @modified-icon-width;
+    }
+
+    .title{
+      -webkit-transform: skewX(-@tab-skew);
+    }
   }
 
-  > li.active > a {
-    .text(highlight);
-    border: none;
-    border-bottom-right-radius: 0;
-    border-bottom-left-radius: 0;
-    background-color: @background-color-highlight;
+  .tab.active {
+    z-index: 10;
+    line-height: @tab-height - 2px;
+    color: @text-color-highlight;
+
+    .title{
+      position: relative;
+      top: 1px;
+    }
+
+    .close-icon {
+      line-height: @tab-height - 1px;
+    }
+
+    &, &:before {
+      background: @tab-background-color-active;
+      height: @tab-height + 1px;
+      box-shadow: none;
+    }
+  }
+
+  .tab:hover {
+    color: @text-color-highlight;
+  }
+
+  .tab.active:hover .close-icon {
+    color: @text-color-highlight;
+  }
+
+  .placeholder {
+    height: @tab-height + @tab-top-padding + @tab-bottom-border-height;
+    &:after {
+      top: @tab-height + @tab-top-padding + @tab-bottom-border-height;
+    }
   }
 }
diff --git a/stylesheets/ui-variables.less b/stylesheets/ui-variables.less
index 919ffb3..8b8ab87 100644
--- a/stylesheets/ui-variables.less
+++ b/stylesheets/ui-variables.less
@@ -63,7 +63,7 @@
 
 // Sizes
 
-@font-size: 12px;
+@font-size: 11px;
 
 @disclosure-arrow-size: 12px;
 

From ed069869acec68cd2a7c337bdeccc3031c35978b Mon Sep 17 00:00:00 2001
From: Matt Graham <graham@github.com>
Date: Tue, 5 Nov 2013 18:28:52 -0500
Subject: [PATCH 2/8] fixing top: -1

---
 stylesheets/tabs.less | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/stylesheets/tabs.less b/stylesheets/tabs.less
index 7eafeea..8924791 100644
--- a/stylesheets/tabs.less
+++ b/stylesheets/tabs.less
@@ -46,7 +46,7 @@
     &:before {
       content: '';
       position: absolute;
-      top: -1px;
+      top: 0px;
       left: -18px;
       height: @tab-height;
       width: 34px;
@@ -54,6 +54,7 @@
       border-left: @tab-border;
       box-shadow: inset 1px -1px 1px rgba(0,0,0, .05);
       -webkit-transform: skewX(133deg);
+      border-top: none;
     }
 
     .close-icon {

From 2f5866aeff0753ec49a912232b00bdada98edf15 Mon Sep 17 00:00:00 2001
From: Matt Graham <graham@github.com>
Date: Wed, 6 Nov 2013 13:17:17 -0500
Subject: [PATCH 3/8] &:before woes

---
 stylesheets/atom.less         |  4 ++++
 stylesheets/panels.less       |  5 -----
 stylesheets/tabs.less         | 24 +++++++++++++-----------
 stylesheets/ui-variables.less |  8 ++++----
 4 files changed, 21 insertions(+), 20 deletions(-)

diff --git a/stylesheets/atom.less b/stylesheets/atom.less
index f868642..54c444d 100644
--- a/stylesheets/atom.less
+++ b/stylesheets/atom.less
@@ -1,5 +1,9 @@
 @import "ui-variables";
 
+* {
+	box-sizing: border-box;
+}
+
 #root-view {
   font: caption;
   background-color: @app-background-color;
diff --git a/stylesheets/panels.less b/stylesheets/panels.less
index d5c5743..8355b98 100644
--- a/stylesheets/panels.less
+++ b/stylesheets/panels.less
@@ -29,11 +29,6 @@
   position: relative;
   background-color: @inset-panel-background-color;
   border-radius: @component-border-radius;
-
-  border: 1px solid @inset-panel-border-color;
-  box-shadow:
-    inset 0 1px 3px fadeout(@inset-panel-border-color, 40%),
-    inset 0 -1px 3px fadeout(@background-color-highlight, 3%);
 }
 
 .is-blurred {
diff --git a/stylesheets/tabs.less b/stylesheets/tabs.less
index 8924791..aff1dd9 100644
--- a/stylesheets/tabs.less
+++ b/stylesheets/tabs.less
@@ -8,9 +8,10 @@
 
 .tab-bar {
   height: @tab-height + @tab-top-padding + 5px;
-  background-image: -webkit-linear-gradient(top, @tab-bar-background-color, lighten(@tab-bar-background-color, 9%));
+  background: tab-bar-background-color;
   box-shadow: inset 0 -8px 8px -4px rgba(0,0,0, .15);
   padding: 0 10px;
+  box-sizing: border-box;
 
   &:after {
     content: "";
@@ -20,7 +21,6 @@
     left: 0px;
     width: 100%;
     background-color: @tab-background-color-active;
-    border-bottom: 1px solid @tab-bar-border-color;
     border-top: 1px solid @tab-border-color;
   }
 
@@ -37,24 +37,23 @@
     box-shadow: inset -1px -1px 1px rgba(0,0,0, .05);
     -webkit-transform: skewX(@tab-skew);
     transition: color .1s ease-in;
+    box-shadow: inset -1px 1px 0 @tab-border-color;
 
     &, &:before {
-      background-image: -webkit-linear-gradient(top, @tab-background-color, darken(@tab-background-color, 6%));
-      border-top: @tab-border;
+      background-image: -webkit-linear-gradient(top, lighten(#333, 7%), #333);
     }
 
     &:before {
       content: '';
       position: absolute;
-      top: 0px;
+      top: 0;
       left: -18px;
       height: @tab-height;
-      width: 34px;
+      width: 40px;
       border-top-left-radius: @tab-radius;
       border-left: @tab-border;
-      box-shadow: inset 1px -1px 1px rgba(0,0,0, .05);
       -webkit-transform: skewX(133deg);
-      border-top: none;
+      box-shadow: inset 1px 1px 0 @tab-border-color;
     }
 
     .close-icon {
@@ -76,8 +75,10 @@
 
   .tab.active {
     z-index: 10;
-    line-height: @tab-height - 2px;
+    line-height: @tab-height - 4px;
     color: @text-color-highlight;
+    box-shadow: inset -1px -1px 0 @tab-border-color;
+    border: none;
 
     .title{
       position: relative;
@@ -89,9 +90,10 @@
     }
 
     &, &:before {
-      background: @tab-background-color-active;
+      background-image: -webkit-linear-gradient(top, lighten(@tab-background-color-active, 7%), @tab-background-color-active);
       height: @tab-height + 1px;
-      box-shadow: none;
+      box-shadow: inset 1px 1px 0 @tab-border-color;
+      border: none;
     }
   }
 
diff --git a/stylesheets/ui-variables.less b/stylesheets/ui-variables.less
index 8b8ab87..bc2554f 100644
--- a/stylesheets/ui-variables.less
+++ b/stylesheets/ui-variables.less
@@ -45,11 +45,11 @@
 @button-background-color-selected: #5c6064;
 @button-border-color: @base-border-color;
 
-@tab-bar-background-color: @inset-panel-background-color;
+@tab-bar-background-color: #222;
 @tab-bar-border-color: darken(@tab-background-color-active, 10%);
-@tab-background-color: #292c2f;
-@tab-background-color-active: @panel-heading-background-color;
-@tab-border-color: transparent;
+@tab-background-color: #333;
+@tab-background-color-active: #222;
+@tab-border-color: red;
 
 @tree-view-background-color: @tool-panel-background-color;
 @tree-view-border-color: @tool-panel-border-color;

From 57320766ccafade746e46fd20215eb84c4835ea4 Mon Sep 17 00:00:00 2001
From: Matt Graham <graham@github.com>
Date: Wed, 6 Nov 2013 13:35:29 -0500
Subject: [PATCH 4/8] fixable tabs

---
 stylesheets/panels.less       |  1 -
 stylesheets/tabs.less         | 13 +++++++------
 stylesheets/ui-variables.less |  2 +-
 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/stylesheets/panels.less b/stylesheets/panels.less
index 8355b98..71496bb 100644
--- a/stylesheets/panels.less
+++ b/stylesheets/panels.less
@@ -28,7 +28,6 @@
 .inset-panel {
   position: relative;
   background-color: @inset-panel-background-color;
-  border-radius: @component-border-radius;
 }
 
 .is-blurred {
diff --git a/stylesheets/tabs.less b/stylesheets/tabs.less
index aff1dd9..be4fbcc 100644
--- a/stylesheets/tabs.less
+++ b/stylesheets/tabs.less
@@ -21,7 +21,7 @@
     left: 0px;
     width: 100%;
     background-color: @tab-background-color-active;
-    border-top: 1px solid @tab-border-color;
+    border-top: 1px solid lighten(@tab-border-color, 5%);
   }
 
   .tab {
@@ -75,10 +75,9 @@
 
   .tab.active {
     z-index: 10;
-    line-height: @tab-height - 4px;
+    line-height: @tab-height - 3px;
     color: @text-color-highlight;
-    box-shadow: inset -1px -1px 0 @tab-border-color;
-    border: none;
+    box-shadow: inset -1px 1px 0 lighten(@tab-border-color, 5%);
 
     .title{
       position: relative;
@@ -92,8 +91,10 @@
     &, &:before {
       background-image: -webkit-linear-gradient(top, lighten(@tab-background-color-active, 7%), @tab-background-color-active);
       height: @tab-height + 1px;
-      box-shadow: inset 1px 1px 0 @tab-border-color;
-      border: none;
+    }
+
+    &:before {
+      box-shadow: inset 1px 1px 0 lighten(@tab-border-color, 5%);
     }
   }
 
diff --git a/stylesheets/ui-variables.less b/stylesheets/ui-variables.less
index bc2554f..1a921e5 100644
--- a/stylesheets/ui-variables.less
+++ b/stylesheets/ui-variables.less
@@ -49,7 +49,7 @@
 @tab-bar-border-color: darken(@tab-background-color-active, 10%);
 @tab-background-color: #333;
 @tab-background-color-active: #222;
-@tab-border-color: red;
+@tab-border-color: #333;
 
 @tree-view-background-color: @tool-panel-background-color;
 @tree-view-border-color: @tool-panel-border-color;

From 573b20411ca3c3578149eedae234979b6a1a3edc Mon Sep 17 00:00:00 2001
From: Matt Graham <graham@github.com>
Date: Wed, 6 Nov 2013 14:06:44 -0500
Subject: [PATCH 5/8] finally

---
 stylesheets/tabs.less         | 20 +++++++++++++-------
 stylesheets/ui-variables.less |  2 +-
 2 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/stylesheets/tabs.less b/stylesheets/tabs.less
index be4fbcc..d3bd68e 100644
--- a/stylesheets/tabs.less
+++ b/stylesheets/tabs.less
@@ -21,7 +21,7 @@
     left: 0px;
     width: 100%;
     background-color: @tab-background-color-active;
-    border-top: 1px solid lighten(@tab-border-color, 5%);
+    border-top: 1px solid @tab-border-color;
   }
 
   .tab {
@@ -33,11 +33,11 @@
     padding-left: 0;
     margin-left: 15px;
     border-top-right-radius: @tab-radius;
-    border-right: @tab-border;
     box-shadow: inset -1px -1px 1px rgba(0,0,0, .05);
     -webkit-transform: skewX(@tab-skew);
     transition: color .1s ease-in;
-    box-shadow: inset -1px 1px 0 @tab-border-color;
+    box-shadow: inset -1px 1px 0 @tab-border-color, 4px 0px 4px rgba(0,0,0,.1);
+    border: none;
 
     &, &:before {
       background-image: -webkit-linear-gradient(top, lighten(#333, 7%), #333);
@@ -51,9 +51,9 @@
       height: @tab-height;
       width: 40px;
       border-top-left-radius: @tab-radius;
-      border-left: @tab-border;
       -webkit-transform: skewX(133deg);
-      box-shadow: inset 1px 1px 0 @tab-border-color;
+      box-shadow: inset 1px 1px 0 @tab-border-color, -4px 0px 4px rgba(0,0,0,.1);
+      border: none;
     }
 
     .close-icon {
@@ -71,13 +71,18 @@
     .title{
       -webkit-transform: skewX(-@tab-skew);
     }
+
+    &:first-child {
+      margin-left: 20px;
+    }
   }
 
   .tab.active {
     z-index: 10;
     line-height: @tab-height - 3px;
     color: @text-color-highlight;
-    box-shadow: inset -1px 1px 0 lighten(@tab-border-color, 5%);
+    box-shadow: inset -1px 1px 0 @tab-border-color, 4px -4px 4px rgba(0,0,0,.1);
+    border: none;
 
     .title{
       position: relative;
@@ -94,7 +99,8 @@
     }
 
     &:before {
-      box-shadow: inset 1px 1px 0 lighten(@tab-border-color, 5%);
+      border: none;
+      box-shadow: inset 1px 1px 0 @tab-border-color, -4px -4px 4px rgba(0,0,0,.1);
     }
   }
 
diff --git a/stylesheets/ui-variables.less b/stylesheets/ui-variables.less
index 1a921e5..5847a0d 100644
--- a/stylesheets/ui-variables.less
+++ b/stylesheets/ui-variables.less
@@ -49,7 +49,7 @@
 @tab-bar-border-color: darken(@tab-background-color-active, 10%);
 @tab-background-color: #333;
 @tab-background-color-active: #222;
-@tab-border-color: #333;
+@tab-border-color: #484848;
 
 @tree-view-background-color: @tool-panel-background-color;
 @tree-view-border-color: @tool-panel-border-color;

From 05b9c12013e56d2df031da276f5d902ce8c500bb Mon Sep 17 00:00:00 2001
From: Ben Ogle <ogle.ben@gmail.com>
Date: Wed, 6 Nov 2013 11:19:30 -0800
Subject: [PATCH 6/8] Use tab background color var

---
 stylesheets/tabs.less | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stylesheets/tabs.less b/stylesheets/tabs.less
index d3bd68e..b570dd6 100644
--- a/stylesheets/tabs.less
+++ b/stylesheets/tabs.less
@@ -8,7 +8,7 @@
 
 .tab-bar {
   height: @tab-height + @tab-top-padding + 5px;
-  background: tab-bar-background-color;
+  background: @tab-bar-background-color;
   box-shadow: inset 0 -8px 8px -4px rgba(0,0,0, .15);
   padding: 0 10px;
   box-sizing: border-box;

From f23fb3c07b0a519f8e9c2416dbf45a9efc039f4b Mon Sep 17 00:00:00 2001
From: Ben Ogle <ogle.ben@gmail.com>
Date: Wed, 6 Nov 2013 11:40:06 -0800
Subject: [PATCH 7/8] Add a bottom border to the tabs.

@mattgraham, if you don't like this, we can revert...
---
 stylesheets/tabs.less | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/stylesheets/tabs.less b/stylesheets/tabs.less
index b570dd6..55d223e 100644
--- a/stylesheets/tabs.less
+++ b/stylesheets/tabs.less
@@ -3,11 +3,12 @@
 @modified-icon-width: 8px;
 @tab-skew: 30deg;
 @tab-top-padding: 5px;
-@tab-bottom-border-height: 5px;
+@tab-bottom-border-height: 8px;
 @tab-border: 1px solid @tab-border-color;
+@tab-bar-bottom-border-color: #111;
 
 .tab-bar {
-  height: @tab-height + @tab-top-padding + 5px;
+  height: @tab-height + @tab-top-padding + @tab-bottom-border-height;
   background: @tab-bar-background-color;
   box-shadow: inset 0 -8px 8px -4px rgba(0,0,0, .15);
   padding: 0 10px;
@@ -22,6 +23,7 @@
     width: 100%;
     background-color: @tab-background-color-active;
     border-top: 1px solid @tab-border-color;
+    border-bottom: 1px solid @tab-bar-bottom-border-color;
   }
 
   .tab {

From d701da7a56ce1b0620938e7298bae4d80fcc5643 Mon Sep 17 00:00:00 2001
From: Ben Ogle <ogle.ben@gmail.com>
Date: Wed, 6 Nov 2013 14:45:23 -0800
Subject: [PATCH 8/8] Fix padding on the right side of the tabs to match left

---
 stylesheets/tabs.less | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stylesheets/tabs.less b/stylesheets/tabs.less
index 55d223e..62c38a1 100644
--- a/stylesheets/tabs.less
+++ b/stylesheets/tabs.less
@@ -11,7 +11,7 @@
   height: @tab-height + @tab-top-padding + @tab-bottom-border-height;
   background: @tab-bar-background-color;
   box-shadow: inset 0 -8px 8px -4px rgba(0,0,0, .15);
-  padding: 0 10px;
+  padding: 0 13px 0 10px;
   box-sizing: border-box;
 
   &:after {